231506566704 has 480 divisors, whose sum is σ = 771333488640. Its totient is φ = 63458131968.

The previous prime is 231506566691. The next prime is 231506566747. The reversal of 231506566704 is 407665605132.

231506566704 is a `hidden beast` number, since 2 + 3 + 15 + 0 + 6 + 566 + 70 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 231506566704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 655825792 + ... + 655826144.

It is an arithmetic number, because the mean of its divisors is an integer number (1606944768).

Almost surely, 2^231506566704 is an apocalyptic number.

231506566704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231506566704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385666744320).

231506566704 is an abundant number, since it is smaller than the sum of its proper divisors (539826921936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231506566704 is a wasteful number, since it uses less digits than its factorization.

231506566704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 231506566704 in words is "two hundred thirty-one billion, five hundred six million, five hundred sixty-six thousand, seven hundred four".